Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor senses alien threat in tower
S3E42
·
The War Machines Episode 1
To
Doctor tests WOTAN’s hidden intelligence
S3E42
·
The War Machines Episode 1
Why These Connect
The narrative assertion
"The Doctor's desire to investigate the tower leads him and Dodo directly to Brett's laboratory."
About Causal Connections
A directly causes B. The first event sets forces in motion that produce the second. These are the load-bearing connections of plot--remove one and the story structure collapses.